The ratchet sleeve wrench is connected by the main sleeve of plum blossom of different sizes and the plum blossom sleeve through the internal and external keys of the hinge key. Because there are two through holes in the shape of the club sleeve.

　　1. 可调扳手可轻松调整扳手角度。该扳手用于螺钉的紧固作业，具有适用性强、使用方便、成本低等特点。

　　1. The adjustable wrench can easily adjust the angle of the wrench. The wrench is used for fastening screw, and has the characteristics of strong applicability, convenient use and low cost.

　　电动扭矩扳手

　　Electric Torque Spanner

　　2.扭矩扳手——也称为扭力扳手或力矩扳手,力矩是力和距离的产物,当收紧螺丝,螺栓、螺母螺纹紧固件和其它需要控制的转矩应用确保线程紧张而不是太多的扭矩销毁线程,所以扭矩扳手操作。，设置所需扭矩值的上限。当施加的扭矩达到设定值时，扳手会发出“卡塔”的声音，或者扳手接头发生轻微弯曲，说明扭矩已经拧紧，不再增加力。不同的是扭矩扳手的扭矩可以设定。扭矩扳手(扭矩扳手)的原理产生“扭矩”的声音很简单，可以分为以下几个步骤来理解:

　　2. Torque wrench, also known as torque wrench or torque wrench, torque is the product of force and distance. When tightening screw, bolt, nut thread fastener and other torque applications need to be controlled to ensure thread tension rather than too much torque to destroy threads, so the torque wrench operation. First, set the upper limit of the required torque value. When the applied torque reaches the set value, the wrench will emit a "kata" sound, or the wrench joint will be slightly bent, indicating that the torque has been tightened, no additional force. The difference is that the torque of the torque wrench can be set. Torque wrench (Torque wrench) principle produces "Torque" sound very simple, can be divided into the following steps to understand:

　　3.扭矩扳手发出的“卡塔”由其内部的扭矩释放机构产生，该机构由压力弹簧、扭矩释放关节和扭矩砧三种结构组成。

　　3. The "cartridge" emitted by the torque wrench is generated by its internal torque release mechanism, which consists of three structures: pressure spring, torque release joint and torque anvil.

　　电动扭矩扳手

　　Electric Torque Spanner

　　4. 在扭矩扳手上设置所需扭矩值(在推杆上设置弹簧，按下扭矩释放接头)，锁紧扭矩扳手，开始拧紧螺栓。当螺栓达到扭矩(施加的扭矩大于弹簧压力)时，会发生瞬间断开。在断开作用的瞬间，扳手的金属外壳发出“kata”的声音。这证实了达到扭矩值的警惕性(就像我们的手臂关节在铁管中弯曲15度，然后立即伸直并接触钢管一样)。

　　4. Firstly, set the required torque value on the torque wrench (set the spring on the push rod, press the torque release joint), lock the torque wrench, and start tightening the bolt. When the bolt reaches the torque (the applied torque is greater than the spring pressure), it will break instantaneously. At the moment of disconnection, the metal casing of the wrench makes a "kata" sound. This confirms the vigilance to reach the torque value (just as our arm joints bend 15 degrees in the pipe and then straighten out and touch the pipe immediately).

　　说的是常用的手动扭矩扳手，除了电动扭矩扳手、气动扭矩扳手等。

　　Said is the most commonly used manual torque wrench, in addition to electric torque wrench, pneumatic torque wrench, etc.

　　结构扭矩扳手又称扭矩表、扭矩螺丝刀。它是根据梁的弯曲原理、扭杆的弯曲原理和螺旋弹簧的压缩原理设计的，可以测量螺母上的扭矩。

　　Structural torque wrench is also called torque meter and torque screwdriver. It is designed according to the bending principle of the beam, the bending principle of the torsion bar and the compression principle of the coil spring. It can measure the torque on the nut.

　　扭力扳手有板式和刻度盘式两种。扭矩扳手有一根长弹性杆，一端有手柄，另一端有一个方形或六角形的头。可互换的套筒设置在方形或六角形的头部，并用钢球固定。它的顶部也有一个长指针。刻度板固定在手柄底座上，刻度值为每格1N(或kg/m)。使用前，先将安装在扳手上的指示器调整到所需扭矩，然后再拉动扳手。当达到预定扭矩时，指示器上的指针将向销轴旋转。后，指针与销轴发生碰撞，通过音箱信号或传感器信号通知操作者。

　　There are two types of torsion wrench: plate type and dial type. The torque wrench has a long elastic rod with a handle at one end and a square or hexagonal head at the other end. The interchangeable sleeve is arranged at the head of a square or hexagonal shape and fixed with a steel ball. It also has a long pointer at the top. The scale plate is fixed on the base of the handle, and the scale value is 1N (or kg/m) per grid. Before using, adjust the indicator installed on the wrench to the required torque, and then pull the wrench. When the predetermined torque is reached, the needle on the indicator will rotate to the pin shaft. Finally, the pointer collides with the pin shaft, and the operator is informed by the speaker signal or sensor signal.

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